
<div class="fluent-multi-splitter" orientation="horizontal" b-ug2ltnxcve="" blazor:elementreference="xxx">
  <div id="xxx" status="lastresizable" class="fluent-multi-splitter-pane" style="flex-basis: 100%;" data-index="0">Pane A</div>
  <div class="fluent-multi-splitter-bar" status="lastresizable" blazor:onmousedown="1" blazor:onclick:preventdefault="" blazor:onclick:stoppropagation=""></div>
  <div id="xxx" status="locked" class="fluent-multi-splitter-pane" style="flex-basis: 300px; min-width: 300px;" data-index="1">Pane B</div>
</div>